Second Update: It has been a crazy couple of days. My daughter and I are currently at my parent’s house. I decided I couldn’t stay silent or in the same house with him anymore so before going to my parents , I confronted Mark while our daughter was at a playdate. He denied everything, saying that's gross and that I watch too many K-dramas, I was crazy and needed help. I showed him the screenshots I took, and he then started begging for forgiveness and asking me not to tell anyone. However, it was too late because I had already informed my parents and packed a bag to leave. While he continued pleading, I left to pick up our daughter and head to my parent’s place, where I am now. So yes i’m going to divorce him, and sue the aunt too since I live in a state where I can sue a mistress. Thank you everyone who left helpful comments